All the solutions provided in McGraw Hill My Math Grade 1 Answer Key PDF Chapter 9 Lesson 7 Problem-Solving Strategy: Use Logical Reasoning will give you a clear idea of the concepts.
McGraw-Hill My Math Grade 1 Answer Key Chapter 9 Lesson 7 Problem-Solving Strategy: Use Logical Reasoning
Ana made the shape below with 9 blocks. What 4 blocks are missing?
1. Understand
Underline what you know.
Circle what you need to find.
2. Plan
How will I solve the problem?
3. Solve
I will use logical reasoning.
4. Check
Is my answer reasonable? Explain.
Answer:
Explanation:
Ana made the shape below with 9 blocks
4 blocks are missing
I used logical reasoning to solve the problem
I underlined what i know and circled what i need to find
The missing blocks are a triangle, a trapezoid and 2 squares.
Practice the Strategy
Angel has 6 pattern blocks. He makes the shape below. Two pattern blocks are missing. What two blocks are missing?
1. Understand
Underline what you know.
Circle what you need to find.
2. Plan
How will I solve the problem?
3. Solve
I will ..
4. Check
Is my answer reasonable? Explain.
Answer:
Explanation:
Angel has 6 pattern blocks. He makes the shape below
Two pattern blocks are missing
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the missing blocks
The two missing blocks are a rhombus and a trapezoid.
Apply the Strategy
Use pattern blocks to solve.
Question 1.
Kadence made the shape below using only trapezoids and triangles. How many blocks are missing?
3 trapezoids and _____________ triangles
Answer:
Explanation:
Kadence made the shape below using only trapezoids and triangles
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the missing blocks
The missing blocks are 3 trapezoids and 2 triangles.
Question 2.
Kendall made the shape below using triangle blocks. How many triangles are missing?
______________ triangles
Answer:
Explanation:
Kendall made the shape below using triangle blocks
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the missing blocks
So, 3 triangles are missing.
Review the Strategies
Choose a strategy
- Use logical reasoning.
- Act it out.
- Draw a diagram.
Question 3.
Lynn covers this pattern block with the same 6 pattern blocks. What blocks did she use?
Answer:
Explanation:
Lynn covers this pattern block with the same 6 pattern blocks
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the blocks used
Lynn used 6 same triangle blocks to cover this block.
Question 4.
Mary put 2 triangles together to make a new shape. How many sides does the new shape have?
____________ sides
Answer:
Explanation:
Mary put 2 triangles together to make a new shape
I used logical reasoning to solve the problem
I put the two triangles together to make a new shape
The new shape is a rhombus
It has 4 sides.
Question 5.
Kevin made a shape. Kieran took 3 blocks away. Draw lines to show what 3 blocks are missing.
Answer:
Explanation:
Kevin made a shape
Kieran took 3 blocks away
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the missing blocks
The three missing blocks are a rhombus, a triangle and a square.
McGraw Hill My Math Grade 1 Chapter 9 Lesson 7 My Homework Answer Key
Problem Solving
Underline what you know. Circle what you need to find. Use logical reasoning to solve.
Question 1.
Rashad covered the pattern block with the same three blocks. Circle which blocks he used.
Answer:
Explanation:
Rashad covered the pattern block with the same three blocks
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the blocks used
I drew a circle around the pattern block the rhombus.
Question 2.
How many trapezoids would you need to make this shape?
____________ trapezoids
Answer:
Explanation:
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the missing blocks
We need 4 trapezoids to make the above shape.
Question 3.
Kristen made this shape. Circle which block is missing.
Answer:
Explanation:
Kristen made this shape
I underlined what i know and circled what i need to find
I used logical reasoning to solve the problem
I drew lines in the shape to show the missing blocks
The missing block a trapezoid and i drew a circle around it.
Math at Home Have your child build a shape out of construction paper squares. triangles, and trapezoids, Then, take some shapes away. Have your child figure out what shapes are missing.
Answer: